Backdating PIP to 2016 after rule change?

Hi Mosala/Gordon
I only got the 4 points 3 years ago, and then had a letter last year saying they were looking at mobility again, so it looks like I was one of the early ones to get checked with the opd rule. I expected to get mobility with my claim 3 years ago, and when it was reviewed with the checking through all claims due to the opd rule, it was not changed, I was kept on the 4 points.(I was surprised again)
Yet this time I got it the mobility with the assessor quoting the consultant's exact same evidence that was with my claim 3 years ago!

Well, that sounds good then as the decision (after tribunal) was made in July 2017. I wonder if I should contact them in case I have been over looked?

Cruella, What date was your decision made? My circumstances are the same now as they were 3 years ago too. I don't think I got a letter though, so perhaps I have been overlooked.

Gordon wrote "The Tribunal remakes the original Decision and it applies from the same date as that Decision so it doesn't matter when the Tribunal was, it is the date of the original Decision that is important"

I was 'told' of the Decision in a letter dated 28 Nov 2016. So if the actual Decision was made before 28 Nov 2016 then I suppose I won't qualify? I was hoping that they would go by the Tribunal Decision.